AppStore/iTunes app keep asking Apple ID Password

If you have a problem with AppStore or iTunes app on iPhone while downloading or updating apps straight from the iPhone and it’s keep asking your Apple ID password.

Check whether the Apple ID and password works in iTunes and also if you sign-in to your account online on your computer.

If that just does not seem to work on your iPhone when you try to download an app it asks you to verify then the screen comes back up where you have to input my password, please do the following steps:

Tap Settings → Store → tap on your Apple ID → Sign Out

Then tap Sign-in and re-enter all information of your Apple ID CORRECTLY.